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In contrast, most other spermatophytes—that is, gymnosperms, monocots and paleodicots—have monoculcate pollen, with a single pore located in a groove called a "sulcus". [ 2 ] [ 8 ] The gynoecium of Pentapetalae plants is usually composed of five carpels joined together, although gynoeciums formed by three carpels are also quite common.
The corolla is gametopetalous, the five petals may be joined forming a tube with 4 or 5 lobes (in the flower called tubulose flower or floret, or two groups of petals joined (in the case of bilabiated flowers, with an upper lip formed by 2 petals and a lower lip formed by 3 petals), or they can present a short tube and the limb prolonged ...
Claw – a noticeably narrowed or attenuated organ base, typically a petal; e.g. Viola. Connate – when the same parts of a flower are fused to each other, petals in a gamopetalous flower; e.g. Petunia. Corolla – the whorl of petals of a flower. Corona – an additional structure between the petals and the stamens.
What appear to be "petals" of an individual flower, are actually each individual complete ray flowers, and at the center is a dense pack of individual tiny disc flowers. Because the collection has the overall appearance of a single flower, the collection of flowers in the head of this sunflower is called a pseudanthium or a composite.
A corolla of separate petals, without fusion of individual segments, is apopetalous. If the petals are free from one another in the corolla, the plant is polypetalous or choripetalous; while if the petals are at least partially fused, it is gamopetalous or sympetalous. In the case of fused tepals, the term is syntepalous. The corolla in some ...
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K 3+3 – a calyx with six free sepals, arranged as two separate whorls; A∞ – many stamens; P3–12 – perianth from three to twelve petals; Groups of organs can be described by writing the number of instances in the group as superscript. A5² – 5 groups of 2 stamens. The formula can also express organ fusion.
A person playing the game alternately speaks the phrases "He (or she) loves me," and "He loves me not," while picking one petal off a flower (usually an ox-eye daisy) for each phrase. The phrase they speak on picking off the last petal supposedly represents the truth between the object of their affection loving them or not.